Abstract
Bicycle (±)-1 crystallises as a conglomerate (space group P21) and undergoes spontaneous resolution on crystallisation from chloroform or acetone (16–44% ee). The absolute configuration (S)-(−)-1 was determined by synthesis from (S)-Ser-OMe; mutarotation due to the partial conversion of 1 into the corresponding isopropylidene 4 was observed in MeOH solution.
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